Q. If an object of mass 10 kg is moving with a uniform speed of 10 m/s, then the linear momentum and the kinetic energy of the object, respectively, are -
1) 100 N.s and 500 J
2) 100 N.s and 1000 J
3) 200 N.s and 500 J
4) 200 N.s and 1000 J
Q. School bells are made of metals because metals are -
1) Malleable
2) Sonorous
3) Ductile
4) Lustrous
Q. Which one of the following pairs of metals is a very good conductor of heat?
1) Silver and Copper
2) Silver and Lead
3) Copper and Mercury
4) Lead and Mercury
Q. Radioactivity is the disintegration of the -
1) Nucleus
2) Ion
3) Molecule
4) Atom
Q. Glass is a -
1) Polymeric mixture
2) Gel
3) Super-cooled liquid
4) Micro-crystalline solid
Q. A uniform magnetic field is represented by -
1) closed curves
2) parallel lines
3) convergent lines
4) divergent lines
Q. The time taken for the sunlight to reach the earth is about -
1) 10 minutes 3.3 seconds
2) 6 minutes 5.5 seconds
3) 8 minutes 16.6 seconds
4) 9 minutes 8.8 seconds
Q. Standing in front of a special mirror, a man finds his image small head and body but legs of actual size. The shapes of mirror parts are -
1) concave and plane
2) concave and convex
3) Convex and plane
4) plane and convex
Q. The time period of a 1 m long pendulum approximates to -
1) 6 s
2) 4 s
3) 2 s
4) 1 s
Q. A ball is thrown vertically upward with a speed of 40 m/s. The time taken by the ball to reach the maximum height would be approximately -
1) 2 s
2) 3 s
3) 4 s
4) 5 s
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